1 /* 2 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> 3 * 4 * Parts came from builtin-annotate.c, see those files for further 5 * copyright notes. 6 * 7 * Released under the GPL v2. (and only v2, not any later version) 8 */ 9 10 #include "util.h" 11 #include "build-id.h" 12 #include "color.h" 13 #include "cache.h" 14 #include "symbol.h" 15 #include "debug.h" 16 #include "annotate.h" 17 #include <pthread.h> 18 19 const char *disassembler_style; 20 21 static struct ins *ins__find(const char *name); 22 static int disasm_line__parse(char *line, char **namep, char **rawp); 23 24 static void ins__delete(struct ins_operands *ops) 25 { 26 free(ops->source.raw); 27 free(ops->source.name); 28 free(ops->target.raw); 29 free(ops->target.name); 30 } 31 32 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size, 33 struct ins_operands *ops) 34 { 35 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw); 36 } 37 38 int ins__scnprintf(struct ins *ins, char *bf, size_t size, 39 struct ins_operands *ops) 40 { 41 if (ins->ops->scnprintf) 42 return ins->ops->scnprintf(ins, bf, size, ops); 43 44 return ins__raw_scnprintf(ins, bf, size, ops); 45 } 46 47 static int call__parse(struct ins_operands *ops) 48 { 49 char *endptr, *tok, *name; 50 51 ops->target.addr = strtoull(ops->raw, &endptr, 16); 52 53 name = strchr(endptr, '<'); 54 if (name == NULL) 55 goto indirect_call; 56 57 name++; 58 59 tok = strchr(name, '>'); 60 if (tok == NULL) 61 return -1; 62 63 *tok = '\0'; 64 ops->target.name = strdup(name); 65 *tok = '>'; 66 67 return ops->target.name == NULL ? -1 : 0; 68 69 indirect_call: 70 tok = strchr(endptr, '('); 71 if (tok != NULL) { 72 ops->target.addr = 0; 73 return 0; 74 } 75 76 tok = strchr(endptr, '*'); 77 if (tok == NULL) 78 return -1; 79 80 ops->target.addr = strtoull(tok + 1, NULL, 16); 81 return 0; 82 } 83 84 static int call__scnprintf(struct ins *ins, char *bf, size_t size, 85 struct ins_operands *ops) 86 { 87 if (ops->target.name) 88 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name); 89 90 if (ops->target.addr == 0) 91 return ins__raw_scnprintf(ins, bf, size, ops); 92 93 return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr); 94 } 95 96 static struct ins_ops call_ops = { 97 .parse = call__parse, 98 .scnprintf = call__scnprintf, 99 }; 100 101 bool ins__is_call(const struct ins *ins) 102 { 103 return ins->ops == &call_ops; 104 } 105 106 static int jump__parse(struct ins_operands *ops) 107 { 108 const char *s = strchr(ops->raw, '+'); 109 110 ops->target.addr = strtoll(ops->raw, NULL, 16); 111 112 if (s++ != NULL) 113 ops->target.offset = strtoll(s, NULL, 16); 114 else 115 ops->target.offset = UINT64_MAX; 116 117 return 0; 118 } 119 120 static int jump__scnprintf(struct ins *ins, char *bf, size_t size, 121 struct ins_operands *ops) 122 { 123 return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset); 124 } 125 126 static struct ins_ops jump_ops = { 127 .parse = jump__parse, 128 .scnprintf = jump__scnprintf, 129 }; 130 131 bool ins__is_jump(const struct ins *ins) 132 { 133 return ins->ops == &jump_ops; 134 } 135 136 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) 137 { 138 char *endptr, *name, *t; 139 140 if (strstr(raw, "(%rip)") == NULL) 141 return 0; 142 143 *addrp = strtoull(comment, &endptr, 16); 144 name = strchr(endptr, '<'); 145 if (name == NULL) 146 return -1; 147 148 name++; 149 150 t = strchr(name, '>'); 151 if (t == NULL) 152 return 0; 153 154 *t = '\0'; 155 *namep = strdup(name); 156 *t = '>'; 157 158 return 0; 159 } 160 161 static int lock__parse(struct ins_operands *ops) 162 { 163 char *name; 164 165 ops->locked.ops = zalloc(sizeof(*ops->locked.ops)); 166 if (ops->locked.ops == NULL) 167 return 0; 168 169 if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0) 170 goto out_free_ops; 171 172 ops->locked.ins = ins__find(name); 173 if (ops->locked.ins == NULL) 174 goto out_free_ops; 175 176 if (!ops->locked.ins->ops) 177 return 0; 178 179 if (ops->locked.ins->ops->parse) 180 ops->locked.ins->ops->parse(ops->locked.ops); 181 182 return 0; 183 184 out_free_ops: 185 free(ops->locked.ops); 186 ops->locked.ops = NULL; 187 return 0; 188 } 189 190 static int lock__scnprintf(struct ins *ins, char *bf, size_t size, 191 struct ins_operands *ops) 192 { 193 int printed; 194 195 if (ops->locked.ins == NULL) 196 return ins__raw_scnprintf(ins, bf, size, ops); 197 198 printed = scnprintf(bf, size, "%-6.6s ", ins->name); 199 return printed + ins__scnprintf(ops->locked.ins, bf + printed, 200 size - printed, ops->locked.ops); 201 } 202 203 static void lock__delete(struct ins_operands *ops) 204 { 205 free(ops->locked.ops); 206 free(ops->target.raw); 207 free(ops->target.name); 208 } 209 210 static struct ins_ops lock_ops = { 211 .free = lock__delete, 212 .parse = lock__parse, 213 .scnprintf = lock__scnprintf, 214 }; 215 216 static int mov__parse(struct ins_operands *ops) 217 { 218 char *s = strchr(ops->raw, ','), *target, *comment, prev; 219 220 if (s == NULL) 221 return -1; 222 223 *s = '\0'; 224 ops->source.raw = strdup(ops->raw); 225 *s = ','; 226 227 if (ops->source.raw == NULL) 228 return -1; 229 230 target = ++s; 231 232 while (s[0] != '\0' && !isspace(s[0])) 233 ++s; 234 prev = *s; 235 *s = '\0'; 236 237 ops->target.raw = strdup(target); 238 *s = prev; 239 240 if (ops->target.raw == NULL) 241 goto out_free_source; 242 243 comment = strchr(s, '#'); 244 if (comment == NULL) 245 return 0; 246 247 while (comment[0] != '\0' && isspace(comment[0])) 248 ++comment; 249 250 comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name); 251 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); 252 253 return 0; 254 255 out_free_source: 256 free(ops->source.raw); 257 ops->source.raw = NULL; 258 return -1; 259 } 260 261 static int mov__scnprintf(struct ins *ins, char *bf, size_t size, 262 struct ins_operands *ops) 263 { 264 return scnprintf(bf, size, "%-6.6s %s,%s", ins->name, 265 ops->source.name ?: ops->source.raw, 266 ops->target.name ?: ops->target.raw); 267 } 268 269 static struct ins_ops mov_ops = { 270 .parse = mov__parse, 271 .scnprintf = mov__scnprintf, 272 }; 273 274 static int dec__parse(struct ins_operands *ops) 275 { 276 char *target, *comment, *s, prev; 277 278 target = s = ops->raw; 279 280 while (s[0] != '\0' && !isspace(s[0])) 281 ++s; 282 prev = *s; 283 *s = '\0'; 284 285 ops->target.raw = strdup(target); 286 *s = prev; 287 288 if (ops->target.raw == NULL) 289 return -1; 290 291 comment = strchr(s, '#'); 292 if (comment == NULL) 293 return 0; 294 295 while (comment[0] != '\0' && isspace(comment[0])) 296 ++comment; 297 298 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); 299 300 return 0; 301 } 302 303 static int dec__scnprintf(struct ins *ins, char *bf, size_t size, 304 struct ins_operands *ops) 305 { 306 return scnprintf(bf, size, "%-6.6s %s", ins->name, 307 ops->target.name ?: ops->target.raw); 308 } 309 310 static struct ins_ops dec_ops = { 311 .parse = dec__parse, 312 .scnprintf = dec__scnprintf, 313 }; 314 315 static int nop__scnprintf(struct ins *ins __used, char *bf, size_t size, 316 struct ins_operands *ops __used) 317 { 318 return scnprintf(bf, size, "%-6.6s", "nop"); 319 } 320 321 static struct ins_ops nop_ops = { 322 .scnprintf = nop__scnprintf, 323 }; 324 325 /* 326 * Must be sorted by name! 327 */ 328 static struct ins instructions[] = { 329 { .name = "add", .ops = &mov_ops, }, 330 { .name = "addl", .ops = &mov_ops, }, 331 { .name = "addq", .ops = &mov_ops, }, 332 { .name = "addw", .ops = &mov_ops, }, 333 { .name = "and", .ops = &mov_ops, }, 334 { .name = "bts", .ops = &mov_ops, }, 335 { .name = "call", .ops = &call_ops, }, 336 { .name = "callq", .ops = &call_ops, }, 337 { .name = "cmp", .ops = &mov_ops, }, 338 { .name = "cmpb", .ops = &mov_ops, }, 339 { .name = "cmpl", .ops = &mov_ops, }, 340 { .name = "cmpq", .ops = &mov_ops, }, 341 { .name = "cmpw", .ops = &mov_ops, }, 342 { .name = "cmpxch", .ops = &mov_ops, }, 343 { .name = "dec", .ops = &dec_ops, }, 344 { .name = "decl", .ops = &dec_ops, }, 345 { .name = "imul", .ops = &mov_ops, }, 346 { .name = "inc", .ops = &dec_ops, }, 347 { .name = "incl", .ops = &dec_ops, }, 348 { .name = "ja", .ops = &jump_ops, }, 349 { .name = "jae", .ops = &jump_ops, }, 350 { .name = "jb", .ops = &jump_ops, }, 351 { .name = "jbe", .ops = &jump_ops, }, 352 { .name = "jc", .ops = &jump_ops, }, 353 { .name = "jcxz", .ops = &jump_ops, }, 354 { .name = "je", .ops = &jump_ops, }, 355 { .name = "jecxz", .ops = &jump_ops, }, 356 { .name = "jg", .ops = &jump_ops, }, 357 { .name = "jge", .ops = &jump_ops, }, 358 { .name = "jl", .ops = &jump_ops, }, 359 { .name = "jle", .ops = &jump_ops, }, 360 { .name = "jmp", .ops = &jump_ops, }, 361 { .name = "jmpq", .ops = &jump_ops, }, 362 { .name = "jna", .ops = &jump_ops, }, 363 { .name = "jnae", .ops = &jump_ops, }, 364 { .name = "jnb", .ops = &jump_ops, }, 365 { .name = "jnbe", .ops = &jump_ops, }, 366 { .name = "jnc", .ops = &jump_ops, }, 367 { .name = "jne", .ops = &jump_ops, }, 368 { .name = "jng", .ops = &jump_ops, }, 369 { .name = "jnge", .ops = &jump_ops, }, 370 { .name = "jnl", .ops = &jump_ops, }, 371 { .name = "jnle", .ops = &jump_ops, }, 372 { .name = "jno", .ops = &jump_ops, }, 373 { .name = "jnp", .ops = &jump_ops, }, 374 { .name = "jns", .ops = &jump_ops, }, 375 { .name = "jnz", .ops = &jump_ops, }, 376 { .name = "jo", .ops = &jump_ops, }, 377 { .name = "jp", .ops = &jump_ops, }, 378 { .name = "jpe", .ops = &jump_ops, }, 379 { .name = "jpo", .ops = &jump_ops, }, 380 { .name = "jrcxz", .ops = &jump_ops, }, 381 { .name = "js", .ops = &jump_ops, }, 382 { .name = "jz", .ops = &jump_ops, }, 383 { .name = "lea", .ops = &mov_ops, }, 384 { .name = "lock", .ops = &lock_ops, }, 385 { .name = "mov", .ops = &mov_ops, }, 386 { .name = "movb", .ops = &mov_ops, }, 387 { .name = "movdqa",.ops = &mov_ops, }, 388 { .name = "movl", .ops = &mov_ops, }, 389 { .name = "movq", .ops = &mov_ops, }, 390 { .name = "movslq", .ops = &mov_ops, }, 391 { .name = "movzbl", .ops = &mov_ops, }, 392 { .name = "movzwl", .ops = &mov_ops, }, 393 { .name = "nop", .ops = &nop_ops, }, 394 { .name = "nopl", .ops = &nop_ops, }, 395 { .name = "nopw", .ops = &nop_ops, }, 396 { .name = "or", .ops = &mov_ops, }, 397 { .name = "orl", .ops = &mov_ops, }, 398 { .name = "test", .ops = &mov_ops, }, 399 { .name = "testb", .ops = &mov_ops, }, 400 { .name = "testl", .ops = &mov_ops, }, 401 { .name = "xadd", .ops = &mov_ops, }, 402 }; 403 404 static int ins__cmp(const void *name, const void *insp) 405 { 406 const struct ins *ins = insp; 407 408 return strcmp(name, ins->name); 409 } 410 411 static struct ins *ins__find(const char *name) 412 { 413 const int nmemb = ARRAY_SIZE(instructions); 414 415 return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp); 416 } 417 418 int symbol__annotate_init(struct map *map __used, struct symbol *sym) 419 { 420 struct annotation *notes = symbol__annotation(sym); 421 pthread_mutex_init(¬es->lock, NULL); 422 return 0; 423 } 424 425 int symbol__alloc_hist(struct symbol *sym) 426 { 427 struct annotation *notes = symbol__annotation(sym); 428 const size_t size = symbol__size(sym); 429 size_t sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64)); 430 431 notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist); 432 if (notes->src == NULL) 433 return -1; 434 notes->src->sizeof_sym_hist = sizeof_sym_hist; 435 notes->src->nr_histograms = symbol_conf.nr_events; 436 INIT_LIST_HEAD(¬es->src->source); 437 return 0; 438 } 439 440 void symbol__annotate_zero_histograms(struct symbol *sym) 441 { 442 struct annotation *notes = symbol__annotation(sym); 443 444 pthread_mutex_lock(¬es->lock); 445 if (notes->src != NULL) 446 memset(notes->src->histograms, 0, 447 notes->src->nr_histograms * notes->src->sizeof_sym_hist); 448 pthread_mutex_unlock(¬es->lock); 449 } 450 451 int symbol__inc_addr_samples(struct symbol *sym, struct map *map, 452 int evidx, u64 addr) 453 { 454 unsigned offset; 455 struct annotation *notes; 456 struct sym_hist *h; 457 458 notes = symbol__annotation(sym); 459 if (notes->src == NULL) 460 return -ENOMEM; 461 462 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr)); 463 464 if (addr < sym->start || addr > sym->end) 465 return -ERANGE; 466 467 offset = addr - sym->start; 468 h = annotation__histogram(notes, evidx); 469 h->sum++; 470 h->addr[offset]++; 471 472 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 473 ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name, 474 addr, addr - sym->start, evidx, h->addr[offset]); 475 return 0; 476 } 477 478 static void disasm_line__init_ins(struct disasm_line *dl) 479 { 480 dl->ins = ins__find(dl->name); 481 482 if (dl->ins == NULL) 483 return; 484 485 if (!dl->ins->ops) 486 return; 487 488 if (dl->ins->ops->parse) 489 dl->ins->ops->parse(&dl->ops); 490 } 491 492 static int disasm_line__parse(char *line, char **namep, char **rawp) 493 { 494 char *name = line, tmp; 495 496 while (isspace(name[0])) 497 ++name; 498 499 if (name[0] == '\0') 500 return -1; 501 502 *rawp = name + 1; 503 504 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0])) 505 ++*rawp; 506 507 tmp = (*rawp)[0]; 508 (*rawp)[0] = '\0'; 509 *namep = strdup(name); 510 511 if (*namep == NULL) 512 goto out_free_name; 513 514 (*rawp)[0] = tmp; 515 516 if ((*rawp)[0] != '\0') { 517 (*rawp)++; 518 while (isspace((*rawp)[0])) 519 ++(*rawp); 520 } 521 522 return 0; 523 524 out_free_name: 525 free(*namep); 526 *namep = NULL; 527 return -1; 528 } 529 530 static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize) 531 { 532 struct disasm_line *dl = zalloc(sizeof(*dl) + privsize); 533 534 if (dl != NULL) { 535 dl->offset = offset; 536 dl->line = strdup(line); 537 if (dl->line == NULL) 538 goto out_delete; 539 540 if (offset != -1) { 541 if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0) 542 goto out_free_line; 543 544 disasm_line__init_ins(dl); 545 } 546 } 547 548 return dl; 549 550 out_free_line: 551 free(dl->line); 552 out_delete: 553 free(dl); 554 return NULL; 555 } 556 557 void disasm_line__free(struct disasm_line *dl) 558 { 559 free(dl->line); 560 free(dl->name); 561 if (dl->ins && dl->ins->ops->free) 562 dl->ins->ops->free(&dl->ops); 563 else 564 ins__delete(&dl->ops); 565 free(dl); 566 } 567 568 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw) 569 { 570 if (raw || !dl->ins) 571 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw); 572 573 return ins__scnprintf(dl->ins, bf, size, &dl->ops); 574 } 575 576 static void disasm__add(struct list_head *head, struct disasm_line *line) 577 { 578 list_add_tail(&line->node, head); 579 } 580 581 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos) 582 { 583 list_for_each_entry_continue(pos, head, node) 584 if (pos->offset >= 0) 585 return pos; 586 587 return NULL; 588 } 589 590 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start, 591 int evidx, u64 len, int min_pcnt, int printed, 592 int max_lines, struct disasm_line *queue) 593 { 594 static const char *prev_line; 595 static const char *prev_color; 596 597 if (dl->offset != -1) { 598 const char *path = NULL; 599 unsigned int hits = 0; 600 double percent = 0.0; 601 const char *color; 602 struct annotation *notes = symbol__annotation(sym); 603 struct source_line *src_line = notes->src->lines; 604 struct sym_hist *h = annotation__histogram(notes, evidx); 605 s64 offset = dl->offset; 606 const u64 addr = start + offset; 607 struct disasm_line *next; 608 609 next = disasm__get_next_ip_line(¬es->src->source, dl); 610 611 while (offset < (s64)len && 612 (next == NULL || offset < next->offset)) { 613 if (src_line) { 614 if (path == NULL) 615 path = src_line[offset].path; 616 percent += src_line[offset].percent; 617 } else 618 hits += h->addr[offset]; 619 620 ++offset; 621 } 622 623 if (src_line == NULL && h->sum) 624 percent = 100.0 * hits / h->sum; 625 626 if (percent < min_pcnt) 627 return -1; 628 629 if (max_lines && printed >= max_lines) 630 return 1; 631 632 if (queue != NULL) { 633 list_for_each_entry_from(queue, ¬es->src->source, node) { 634 if (queue == dl) 635 break; 636 disasm_line__print(queue, sym, start, evidx, len, 637 0, 0, 1, NULL); 638 } 639 } 640 641 color = get_percent_color(percent); 642 643 /* 644 * Also color the filename and line if needed, with 645 * the same color than the percentage. Don't print it 646 * twice for close colored addr with the same filename:line 647 */ 648 if (path) { 649 if (!prev_line || strcmp(prev_line, path) 650 || color != prev_color) { 651 color_fprintf(stdout, color, " %s", path); 652 prev_line = path; 653 prev_color = color; 654 } 655 } 656 657 color_fprintf(stdout, color, " %7.2f", percent); 658 printf(" : "); 659 color_fprintf(stdout, PERF_COLOR_MAGENTA, " %" PRIx64 ":", addr); 660 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line); 661 } else if (max_lines && printed >= max_lines) 662 return 1; 663 else { 664 if (queue) 665 return -1; 666 667 if (!*dl->line) 668 printf(" :\n"); 669 else 670 printf(" : %s\n", dl->line); 671 } 672 673 return 0; 674 } 675 676 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, 677 FILE *file, size_t privsize) 678 { 679 struct annotation *notes = symbol__annotation(sym); 680 struct disasm_line *dl; 681 char *line = NULL, *parsed_line, *tmp, *tmp2, *c; 682 size_t line_len; 683 s64 line_ip, offset = -1; 684 685 if (getline(&line, &line_len, file) < 0) 686 return -1; 687 688 if (!line) 689 return -1; 690 691 while (line_len != 0 && isspace(line[line_len - 1])) 692 line[--line_len] = '\0'; 693 694 c = strchr(line, '\n'); 695 if (c) 696 *c = 0; 697 698 line_ip = -1; 699 parsed_line = line; 700 701 /* 702 * Strip leading spaces: 703 */ 704 tmp = line; 705 while (*tmp) { 706 if (*tmp != ' ') 707 break; 708 tmp++; 709 } 710 711 if (*tmp) { 712 /* 713 * Parse hexa addresses followed by ':' 714 */ 715 line_ip = strtoull(tmp, &tmp2, 16); 716 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0') 717 line_ip = -1; 718 } 719 720 if (line_ip != -1) { 721 u64 start = map__rip_2objdump(map, sym->start), 722 end = map__rip_2objdump(map, sym->end); 723 724 offset = line_ip - start; 725 if (offset < 0 || (u64)line_ip > end) 726 offset = -1; 727 else 728 parsed_line = tmp2 + 1; 729 } 730 731 dl = disasm_line__new(offset, parsed_line, privsize); 732 free(line); 733 734 if (dl == NULL) 735 return -1; 736 737 disasm__add(¬es->src->source, dl); 738 739 return 0; 740 } 741 742 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize) 743 { 744 struct dso *dso = map->dso; 745 char *filename = dso__build_id_filename(dso, NULL, 0); 746 bool free_filename = true; 747 char command[PATH_MAX * 2]; 748 FILE *file; 749 int err = 0; 750 char symfs_filename[PATH_MAX]; 751 752 if (filename) { 753 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s", 754 symbol_conf.symfs, filename); 755 } 756 757 if (filename == NULL) { 758 if (dso->has_build_id) { 759 pr_err("Can't annotate %s: not enough memory\n", 760 sym->name); 761 return -ENOMEM; 762 } 763 goto fallback; 764 } else if (readlink(symfs_filename, command, sizeof(command)) < 0 || 765 strstr(command, "[kernel.kallsyms]") || 766 access(symfs_filename, R_OK)) { 767 free(filename); 768 fallback: 769 /* 770 * If we don't have build-ids or the build-id file isn't in the 771 * cache, or is just a kallsyms file, well, lets hope that this 772 * DSO is the same as when 'perf record' ran. 773 */ 774 filename = dso->long_name; 775 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s", 776 symbol_conf.symfs, filename); 777 free_filename = false; 778 } 779 780 if (dso->symtab_type == SYMTAB__KALLSYMS) { 781 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id "; 782 char *build_id_msg = NULL; 783 784 if (dso->annotate_warned) 785 goto out_free_filename; 786 787 if (dso->has_build_id) { 788 build_id__sprintf(dso->build_id, 789 sizeof(dso->build_id), bf + 15); 790 build_id_msg = bf; 791 } 792 err = -ENOENT; 793 dso->annotate_warned = 1; 794 pr_err("Can't annotate %s:\n\n" 795 "No vmlinux file%s\nwas found in the path.\n\n" 796 "Please use:\n\n" 797 " perf buildid-cache -av vmlinux\n\n" 798 "or:\n\n" 799 " --vmlinux vmlinux\n", 800 sym->name, build_id_msg ?: ""); 801 goto out_free_filename; 802 } 803 804 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, 805 filename, sym->name, map->unmap_ip(map, sym->start), 806 map->unmap_ip(map, sym->end)); 807 808 pr_debug("annotating [%p] %30s : [%p] %30s\n", 809 dso, dso->long_name, sym, sym->name); 810 811 snprintf(command, sizeof(command), 812 "objdump %s%s --start-address=0x%016" PRIx64 813 " --stop-address=0x%016" PRIx64 814 " -d %s %s -C %s|grep -v %s|expand", 815 disassembler_style ? "-M " : "", 816 disassembler_style ? disassembler_style : "", 817 map__rip_2objdump(map, sym->start), 818 map__rip_2objdump(map, sym->end+1), 819 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw", 820 symbol_conf.annotate_src ? "-S" : "", 821 symfs_filename, filename); 822 823 pr_debug("Executing: %s\n", command); 824 825 file = popen(command, "r"); 826 if (!file) 827 goto out_free_filename; 828 829 while (!feof(file)) 830 if (symbol__parse_objdump_line(sym, map, file, privsize) < 0) 831 break; 832 833 pclose(file); 834 out_free_filename: 835 if (free_filename) 836 free(filename); 837 return err; 838 } 839 840 static void insert_source_line(struct rb_root *root, struct source_line *src_line) 841 { 842 struct source_line *iter; 843 struct rb_node **p = &root->rb_node; 844 struct rb_node *parent = NULL; 845 846 while (*p != NULL) { 847 parent = *p; 848 iter = rb_entry(parent, struct source_line, node); 849 850 if (src_line->percent > iter->percent) 851 p = &(*p)->rb_left; 852 else 853 p = &(*p)->rb_right; 854 } 855 856 rb_link_node(&src_line->node, parent, p); 857 rb_insert_color(&src_line->node, root); 858 } 859 860 static void symbol__free_source_line(struct symbol *sym, int len) 861 { 862 struct annotation *notes = symbol__annotation(sym); 863 struct source_line *src_line = notes->src->lines; 864 int i; 865 866 for (i = 0; i < len; i++) 867 free(src_line[i].path); 868 869 free(src_line); 870 notes->src->lines = NULL; 871 } 872 873 /* Get the filename:line for the colored entries */ 874 static int symbol__get_source_line(struct symbol *sym, struct map *map, 875 int evidx, struct rb_root *root, int len, 876 const char *filename) 877 { 878 u64 start; 879 int i; 880 char cmd[PATH_MAX * 2]; 881 struct source_line *src_line; 882 struct annotation *notes = symbol__annotation(sym); 883 struct sym_hist *h = annotation__histogram(notes, evidx); 884 885 if (!h->sum) 886 return 0; 887 888 src_line = notes->src->lines = calloc(len, sizeof(struct source_line)); 889 if (!notes->src->lines) 890 return -1; 891 892 start = map__rip_2objdump(map, sym->start); 893 894 for (i = 0; i < len; i++) { 895 char *path = NULL; 896 size_t line_len; 897 u64 offset; 898 FILE *fp; 899 900 src_line[i].percent = 100.0 * h->addr[i] / h->sum; 901 if (src_line[i].percent <= 0.5) 902 continue; 903 904 offset = start + i; 905 sprintf(cmd, "addr2line -e %s %016" PRIx64, filename, offset); 906 fp = popen(cmd, "r"); 907 if (!fp) 908 continue; 909 910 if (getline(&path, &line_len, fp) < 0 || !line_len) 911 goto next; 912 913 src_line[i].path = malloc(sizeof(char) * line_len + 1); 914 if (!src_line[i].path) 915 goto next; 916 917 strcpy(src_line[i].path, path); 918 insert_source_line(root, &src_line[i]); 919 920 next: 921 pclose(fp); 922 } 923 924 return 0; 925 } 926 927 static void print_summary(struct rb_root *root, const char *filename) 928 { 929 struct source_line *src_line; 930 struct rb_node *node; 931 932 printf("\nSorted summary for file %s\n", filename); 933 printf("----------------------------------------------\n\n"); 934 935 if (RB_EMPTY_ROOT(root)) { 936 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); 937 return; 938 } 939 940 node = rb_first(root); 941 while (node) { 942 double percent; 943 const char *color; 944 char *path; 945 946 src_line = rb_entry(node, struct source_line, node); 947 percent = src_line->percent; 948 color = get_percent_color(percent); 949 path = src_line->path; 950 951 color_fprintf(stdout, color, " %7.2f %s", percent, path); 952 node = rb_next(node); 953 } 954 } 955 956 static void symbol__annotate_hits(struct symbol *sym, int evidx) 957 { 958 struct annotation *notes = symbol__annotation(sym); 959 struct sym_hist *h = annotation__histogram(notes, evidx); 960 u64 len = symbol__size(sym), offset; 961 962 for (offset = 0; offset < len; ++offset) 963 if (h->addr[offset] != 0) 964 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, 965 sym->start + offset, h->addr[offset]); 966 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum); 967 } 968 969 int symbol__annotate_printf(struct symbol *sym, struct map *map, int evidx, 970 bool full_paths, int min_pcnt, int max_lines, 971 int context) 972 { 973 struct dso *dso = map->dso; 974 const char *filename = dso->long_name, *d_filename; 975 struct annotation *notes = symbol__annotation(sym); 976 struct disasm_line *pos, *queue = NULL; 977 u64 start = map__rip_2objdump(map, sym->start); 978 int printed = 2, queue_len = 0; 979 int more = 0; 980 u64 len; 981 982 if (full_paths) 983 d_filename = filename; 984 else 985 d_filename = basename(filename); 986 987 len = symbol__size(sym); 988 989 printf(" Percent | Source code & Disassembly of %s\n", d_filename); 990 printf("------------------------------------------------\n"); 991 992 if (verbose) 993 symbol__annotate_hits(sym, evidx); 994 995 list_for_each_entry(pos, ¬es->src->source, node) { 996 if (context && queue == NULL) { 997 queue = pos; 998 queue_len = 0; 999 } 1000 1001 switch (disasm_line__print(pos, sym, start, evidx, len, 1002 min_pcnt, printed, max_lines, 1003 queue)) { 1004 case 0: 1005 ++printed; 1006 if (context) { 1007 printed += queue_len; 1008 queue = NULL; 1009 queue_len = 0; 1010 } 1011 break; 1012 case 1: 1013 /* filtered by max_lines */ 1014 ++more; 1015 break; 1016 case -1: 1017 default: 1018 /* 1019 * Filtered by min_pcnt or non IP lines when 1020 * context != 0 1021 */ 1022 if (!context) 1023 break; 1024 if (queue_len == context) 1025 queue = list_entry(queue->node.next, typeof(*queue), node); 1026 else 1027 ++queue_len; 1028 break; 1029 } 1030 } 1031 1032 return more; 1033 } 1034 1035 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx) 1036 { 1037 struct annotation *notes = symbol__annotation(sym); 1038 struct sym_hist *h = annotation__histogram(notes, evidx); 1039 1040 memset(h, 0, notes->src->sizeof_sym_hist); 1041 } 1042 1043 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) 1044 { 1045 struct annotation *notes = symbol__annotation(sym); 1046 struct sym_hist *h = annotation__histogram(notes, evidx); 1047 int len = symbol__size(sym), offset; 1048 1049 h->sum = 0; 1050 for (offset = 0; offset < len; ++offset) { 1051 h->addr[offset] = h->addr[offset] * 7 / 8; 1052 h->sum += h->addr[offset]; 1053 } 1054 } 1055 1056 void disasm__purge(struct list_head *head) 1057 { 1058 struct disasm_line *pos, *n; 1059 1060 list_for_each_entry_safe(pos, n, head, node) { 1061 list_del(&pos->node); 1062 disasm_line__free(pos); 1063 } 1064 } 1065 1066 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp) 1067 { 1068 size_t printed; 1069 1070 if (dl->offset == -1) 1071 return fprintf(fp, "%s\n", dl->line); 1072 1073 printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name); 1074 1075 if (dl->ops.raw[0] != '\0') { 1076 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ", 1077 dl->ops.raw); 1078 } 1079 1080 return printed + fprintf(fp, "\n"); 1081 } 1082 1083 size_t disasm__fprintf(struct list_head *head, FILE *fp) 1084 { 1085 struct disasm_line *pos; 1086 size_t printed = 0; 1087 1088 list_for_each_entry(pos, head, node) 1089 printed += disasm_line__fprintf(pos, fp); 1090 1091 return printed; 1092 } 1093 1094 int symbol__tty_annotate(struct symbol *sym, struct map *map, int evidx, 1095 bool print_lines, bool full_paths, int min_pcnt, 1096 int max_lines) 1097 { 1098 struct dso *dso = map->dso; 1099 const char *filename = dso->long_name; 1100 struct rb_root source_line = RB_ROOT; 1101 u64 len; 1102 1103 if (symbol__annotate(sym, map, 0) < 0) 1104 return -1; 1105 1106 len = symbol__size(sym); 1107 1108 if (print_lines) { 1109 symbol__get_source_line(sym, map, evidx, &source_line, 1110 len, filename); 1111 print_summary(&source_line, filename); 1112 } 1113 1114 symbol__annotate_printf(sym, map, evidx, full_paths, 1115 min_pcnt, max_lines, 0); 1116 if (print_lines) 1117 symbol__free_source_line(sym, len); 1118 1119 disasm__purge(&symbol__annotation(sym)->src->source); 1120 1121 return 0; 1122 } 1123